BSD can be a better choice for a variety of reasons. Firstly business reasons BSD has more permissive licences than Linux's GNU licence which compels you to share any modifications you make to the software. BSD uses the MIT licenses which state that you are allowed to modify the source code and not release it, which is why most embedded devices like routers/firewalls use BSD over Linux. That and BSD is faster at networking.

It also has better storage (ZFS), although this is now implemented in Linux, it is not as stable as BSD which developed it specifically for their OS.